Also, agents which joined coalitions have obtained a higher profit than isolated agents.
Candida species are among the most frequently isolated agents of invasive fungal infection [ 18], and account for 8 10% of hospital-acquired cases of septicaemia [ 15].
Gram-positive bacteria are the most frequently isolated agents in blood cultures from hemodialysis patients, mainly S. aureus [ 7, 10, 11].
Although a variety of microorganisms can cause mastitis in sheep, Staphylococcus spp. are the most frequently isolated agents involved in both acute clinical and subclinical forms.
However, unlike outbreak investigations of the past few decades, echovirus 13 and echovirus 18 were the most commonly isolated agents in this investigation and might have accounted for the increased number of aseptic meningitis cases in Baltimore.
During the past decade, many new agents have been incorporated that have improved both response rates and patient survival, such as the taxanes (paclitaxel and docetaxel), vinorelbine, caelyx and, recently, gemcitabine; there have been used in new combinations or have even been used as isolated agents as second- and third-line treatments for with advanced disease.
However, this left 16% of the total cases with a CNS isolation, which still was the most frequently isolated agent in this series.
One of these agents is isolated (agent 1), and the others are organized into two distinct coalitions: C1 = {2, 5, 6} and C2 = {3, 4}.
It was first developed to isolate patentable agents for drug formulations.
Further investigations are needed in order to isolate these agents and to determine their epidemiology and aetiological role in unknown fever in patients from these areas.
